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During the last stages of pregnancy, the mammary glands (glands that produce milk) develop, where cellular division and synthesis of some proteins take place. Experiments are realized in order to identify the mechanism that leads to the synthesis of these proteins. Experiment: Cells of the mammary glands are divided into two groups. The first group is cultured in the presence of radioaytive uracil, precursor of MRNA (culture 1) and the second group is cultured in the presence of radioactive amino acid leucine that enters in the formation of casein protein (culture 2). We extract cells from culture media 1 and 2 at regular intervals of time, then we measure the radioactivity in these cells. The results are presented in the table below. Time in (hours) 5 15 | 20 40 10 25 30 %of radioactivity Culture 2 0 Culture 1 0 5 20 5 50 50 30 50 Document 1 1-Convert document(1) into a graph. 2-Analyze the results obtained in document (1). 3-Explain why radioactivity in culture 1 appeared before culture 2,

During the last stages of pregnancy, the mammary glands (glands that produce milk) develop, where cellular division and synthesis of some proteins take place. Experiments are realized in order to identify the mechanism that leads to the synthesis of these proteins. Experiment: Cells of the mammary glands are divided into two groups. The first group is cultured in the presence of radioaytive uracil, precursor of MRNA (culture 1) and the second group is cultured in the presence of radioactive amino acid leucine that enters in the formation of casein protein (culture 2). We extract cells from culture media 1 and 2 at regular intervals of time, then we measure the radioactivity in these cells. The results are presented in the table below. Time in (hours) 5 15 | 20 40 10 25 30 %of radioactivity Culture 2 0 Culture 1 0 5 20 5 50 50 30 50 Document 1 1-Convert document(1) into a graph. 2-Analyze the results obtained in document (1). 3-Explain why radioactivity in culture 1 appeared before culture 2,

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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During the last stages of pregnancy, the mammary glands (glands that produce milk) develop, where cellular division and synthesis of some proteins take place. Experiments are realized in order to identify the mechanism that leads to the synthesis of these proteins. Experiment: Cells of the mammary glands are divided into two groups. The first group is cultured in the presence of radioaştive uracil, precursor of mRNA (culture 1) and the second group is cultured in the presence of radioactive amino acid leucine that enters in the formation of casein protein (culture 2). We extract cells from culture media 1 and 2 at regular intervals of time, then we measure the radioactivity in these cells. The results are presented in the table below. Time in (hours) 5 15 | 20 25 30 %of Culture 1 0 20 5 50 30 40 50 radioactivity Culture 2 5 10 50 Document 1 1-Convert document(1) into a graph. 2-Analyze the results obtained in document (1). 3-Explain why radioactivity in culture 1 appeared before culture 2.
Transcribed Image Text:During the last stages of pregnancy, the mammary glands (glands that produce milk) develop, where cellular division and synthesis of some proteins take place. Experiments are realized in order to identify the mechanism that leads to the synthesis of these proteins. Experiment: Cells of the mammary glands are divided into two groups. The first group is cultured in the presence of radioaştive uracil, precursor of mRNA (culture 1) and the second group is cultured in the presence of radioactive amino acid leucine that enters in the formation of casein protein (culture 2). We extract cells from culture media 1 and 2 at regular intervals of time, then we measure the radioactivity in these cells. The results are presented in the table below. Time in (hours) 5 15 | 20 25 30 %of Culture 1 0 20 5 50 30 40 50 radioactivity Culture 2 5 10 50 Document 1 1-Convert document(1) into a graph. 2-Analyze the results obtained in document (1). 3-Explain why radioactivity in culture 1 appeared before culture 2.
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